CN112185736A

CN112185736A - Keyboard device

Info

Publication number: CN112185736A
Application number: CN201910604288.6A
Authority: CN
Inventors: 林育民
Original assignee: Zhishen Technology Co ltd
Current assignee: Zhishen Technology Co ltd; Primax Electronics Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2021-01-05

Abstract

The invention provides a keyboard device which comprises a key bottom plate, a film circuit board, keys and light-emitting components, wherein each key comprises a keycap, a connecting component arranged between the key bottom plate and the keycap and an elastic body arranged between the keycap and the film circuit board, and the light-emitting components are electrically connected with the film circuit board and arranged below the elastic bodies to enable the light-emitting components to be in a central design.

Description

Keyboard device

Technical Field

The invention relates to the field of input equipment, in particular to a keyboard device.

Background

Common input devices for computer peripherals include mouse devices, keyboard devices, and trackball devices, wherein the keyboard devices allow users to directly input characters and symbols into the computer, and are therefore highly appreciated.

Please refer to fig. 1, which is a schematic diagram of an appearance structure of a keyboard device in the prior art. The surface of the keyboard device 1 of the prior art is exposed with a plurality of keys 10, the keys 10 are classified into a general key 101, a numeric key 102, a function key 103, etc., the keys are pressed by a user's finger to generate a corresponding key signal to the computer, so that the computer executes the pressed key function, for example, the general key 101 is used for inputting characters and other symbols, the numeric key 102 is used for inputting numbers, and the function key 103 is used for providing various functions, for example, F1-F12, etc. The keyboard apparatus 1 of the prior art is a keyboard for a notebook computer.

With the development of technology, keyboard manufacturers are dedicated to develop various keyboards with special functions to meet various requirements of different users, for example, a light-emitting keyboard, which has an appearance substantially the same as that of the keyboard apparatus 1 in the prior art, but has an internal structure different from that of a keyboard without a light-emitting function in the prior art in order to provide the light-emitting keyboard with a light-emitting function. The internal structure of the prior art light-emitting keyboard is explained below.

Please refer to fig. 2, which is a cross-sectional view of a portion of a prior art light-emitting keyboard. The prior art light-emitting keyboard 2 includes a plurality of keys 20, a thin film circuit board 21, a light guide plate 22, a light-emitting module 23, a key base plate 24 and a reflective sheet 25, and the keys 20 include key caps 201, a scissor-type linkage assembly 202 and an elastic body 203. In the prior art light-emitting keyboard 2, the key caps 201, the scissors-type connecting elements 202, the elastic bodies 203, the film circuit board 21, the key bottom plate 24, the light guide plate 22 and the reflective sheet 25 are arranged in sequence from top to bottom, and the key bottom plate 24 located between the film circuit board 21 and the light guide plate 22 is used for bearing the key caps 201, the scissors-type connecting elements 202, the elastic bodies 203 and the film circuit board 21.

In the key 20, the key cap 201 is exposed outside the light-emitting keyboard 2 and can be pressed by a user, the scissors-type connecting element 202 is used for connecting the key cap 201 and the key bottom plate 24, and the elastic body 203 passes through the scissors-type connecting element 202 and is respectively contacted with the key cap 201 and the film circuit board 21. The thin film circuit board 21 includes an upper film 211, a middle film 212, and a lower film 213, and the upper film 211, the middle film 212, and the lower film 213 are made of transparent material for light beams to pass through; the transparent material may be Polycarbonate (PC) or Polyethylene (PE). Next, the upper film 211 has a plurality of upper contacts 2111, the middle film 212 is disposed below the upper film 211 and has a plurality of contact openings 2121 corresponding to the plurality of upper contacts 2111, and the lower film 213 is disposed below the middle film 212 and has a plurality of lower contacts 2131 corresponding to the plurality of upper contacts 2111 to form a plurality of key switches 214 with the plurality of upper contacts 2111.

When the key cap 201 of any key 20 is pressed and moves downward relative to the key base 24, the scissor-type link assembly 202 changes from the open-close state to the folded state, and the key cap 201 moving downward presses the elastic body 203, so that the abutting portion 2031 of the elastic body 203 abuts against the corresponding upper contact 2111, and further the corresponding upper contact 2111 contacts the corresponding lower contact 2131 through the corresponding contact opening 2121, thereby electrically connecting the corresponding membrane switch 213, and enabling the keyboard device 2 to generate the corresponding key signal.

Furthermore, the light emitting module 23 includes a power supply circuit board 231 and a plurality of light emitting elements 232 (only two are shown in the figure), the power supply circuit board 231 is located below the thin film circuit board 21 and is used for providing power to the plurality of light emitting elements 232, the plurality of light emitting elements 232 are all lateral light emitting diodes and are disposed on the power supply circuit board 231, and the plurality of light emitting elements 232 respectively extend into the plurality of reflector opening holes 251 of the reflector plate 25 and the plurality of light guide plate opening holes 221 of the light guide plate 22, when the plurality of light emitting elements 232 obtain power, a plurality of light beams B can be generated, and the plurality of light beams B can be projected to the light guide plate 22 and further uniformly spread in the light guide plate 22 to the whole light guide plate 22. The reflective sheet 25 disposed below the light guide plate 22 is used for reflecting the light beam B scattered downward from the light guide plate 22 and returning the light beam B to the light guide plate 22, so as to avoid the waste of the light beam B, wherein the two sides 252 of the reflective sheet 25 are bent upward to cover the plurality of sides 222 of the light guide plate 22, so as to avoid the light leakage phenomenon at the sides 222 of the light guide plate 22.

In the light emitting keyboard 2 in the prior art, each key cap 201 has a light emitting area 2011, the light emitting area 2011 is a position where characters or numbers and other symbols are located, and the light guide plate 22 has a plurality of light guide dots 223 corresponding to the light emitting areas 2011, when the light beam B conducted in the light guide plate 22 is projected onto the light guide dots 223, the light guide dots 223 can guide the light beam B to be projected upward, and the upward projected light beam B can sequentially pass through the key bottom plate opening 241 of the key bottom plate 24 and the thin film circuit board 21, so that the characters or numbers and other symbols on the key cap 201 can be transmitted through the light emitting area 2011 of the key cap 201 to have a light emitting effect.

In recent years, users desire to control the lighting effect of each key in a lighted keypad, for example: because one key is controlled to emit light and the other key does not emit light according to the demand of the electricity competition, the light-emitting keyboard 2 in the prior art cannot meet the demand. To meet the requirements of users, a direct-type light-emitting keyboard is proposed, please refer to fig. 3, which is a schematic sectional view of a partial structure of a prior art direct-type light-emitting keyboard. The direct-illumination keyboard 2' shown in fig. 3 is substantially similar to that shown in fig. 2, except that a direct-illumination light-emitting diode 262 is disposed under the key cap 201 of each key 20, and each direct-illumination light-emitting diode 262 can be controlled to output a light beam B.

In detail, the power supply circuit board 261 of the direct-type light-emitting keyboard 2' is disposed below the thin-film circuit board 21, and the direct-type light-emitting diodes 262 are disposed on the power supply circuit board 261 and extend into the opening 215 of the thin-film circuit board 21, wherein any direct-type light-emitting diode 262 can project the light beam B upwards after being powered by the power supply circuit board 261, and the light beam B projected upwards directly passes through the light exit area 2011 of the key cap 201, so that the key cap 201 has a light-emitting effect.

However, since the light beams B generated by the direct-type light emitting diodes 252 are directly projected upward onto the corresponding key caps 201, the light projection effect of the direct-type light emitting keyboard 2' has a defect of being too concentrated, and for the keys with characters or numbers scattered around the key caps (see the key caps 104 shown in fig. 1), the light emitting degree of each of the symbols 1041 to 1044 on the key caps is not uniform. According to the above description, the related art keyboard apparatus has room for improvement.

Disclosure of Invention

The main objective of the present invention is to provide a keyboard device having a light emitting component electrically connected to a thin film circuit board and disposed below an elastic body of a key, so that the light emitting component is designed to be centered, and therefore, a light beam projected upward by the light emitting component can uniformly irradiate a key cap of the key after passing through the elastic body, so that the key cap has a uniform light emitting effect.

In a preferred embodiment, the present invention provides a keyboard device, which includes a thin film circuit board, a key bottom board, a key and a light emitting element. The film circuit board comprises at least one film switch; a key bottom plate is arranged below the thin film circuit board; and the light-emitting component is arranged below the elastic body and is electrically connected with the film circuit board so as to provide a plurality of light beams, and the light beams sequentially pass through the elastic body and the keycap and then are output outwards. A key includes a key cap, a connecting component and an elastic body. A keycap including at least one abutting part; a connecting component is connected between the key base plate and the keycap so as to enable the keycap to move up and down relative to the key base plate; an elastic body is arranged between the keycap and the film circuit board; when the keycap is pressed, the elastic body is compressed, the at least one abutting part abuts against the at least one film switch, and when the keycap is not pressed any more, the elastic body provides an elastic force to the keycap to enable the keycap to recover to the original position;

in a preferred embodiment, the present invention also provides a keyboard device, which includes a thin film circuit board, a key bottom board, a key and a light emitting element. A thin film circuit board comprises two thin film switches; a key bottom plate is arranged below the thin film circuit board; the light-emitting component is electrically connected with the thin film circuit board and provides a plurality of light beams; a key includes a key cap, a connecting component and an elastic body. A keycap comprises two abutting parts which are respectively corresponding to the two membrane switches; a connecting component is connected between the key base plate and the keycap so as to enable the keycap to move up and down relative to the key base plate; an elastic body is arranged between the keycap and the film circuit board; when the key cap is pressed, the elastic body is compressed, at least one of the two butting parts butts against the corresponding membrane switch, and when the key cap is not pressed any more, the elastic body provides an elastic force to the key cap to restore the key cap to the original position; wherein, the two membrane switches are not shielded by the elastic body and are respectively positioned at two sides of the light-emitting component.

According to the technical scheme, the keyboard device has the advantages and beneficial effects that:

first, for a single key, the corresponding light emitting component and the elastic body are both centered, so that the light beam projected upwards by the light emitting component can uniformly irradiate the keycap after passing through the elastic body, and the keycap has a uniform light emitting effect;

secondly, in response to the central design of the light-emitting component and the elastic body, the keyboard device also designs two membrane switches corresponding to each key, the two membrane switches are respectively positioned at two sides of the light-emitting component, and when the keycap is pressed and obliquely moves downwards, at least one membrane switch can be triggered to enable the keyboard device to generate corresponding key signals;

thirdly, the light-emitting component is directly and electrically connected with the thin film circuit board and can receive power through the thin film circuit board, and the keyboard device does not need to be additionally provided with other circuit boards and light guide plates so as to reduce the manufacturing cost and the volume;

fourth, each key can correspond to a light-emitting component, so that the light-emitting state of each key can be controlled individually.

Drawings

Fig. 1 is a schematic structural diagram of an appearance of a prior art keyboard.

Fig. 2 is a schematic sectional view of a part of a prior art light-emitting keyboard.

Fig. 3 is a schematic sectional view of a part of a prior art direct-type light-emitting keyboard.

Fig. 4 is a schematic diagram of a partial external structure of a keyboard device according to a first preferred embodiment of the invention.

Fig. 5 is an exploded perspective view of a portion of the keyboard device shown in fig. 4.

Fig. 6 is an exploded perspective view of the keyboard apparatus shown in fig. 4 from another perspective.

Fig. 7 is a cross-sectional view of a portion of the keyboard apparatus shown in fig. 4 based on section line XX.

Fig. 8 is a cross-sectional view of the keyboard apparatus shown in fig. 4 based on a section line YY.

Fig. 9 is a cross-sectional view of a portion of a structural base of a keyboard apparatus according to a second preferred embodiment of the invention.

The reference numerals are explained below:

1 keyboard device 2 luminous keyboard

2' direct type luminous keyboard 3 keyboard device

3' keyboard device 10 keys

20-key 21 thin film circuit board

22 light guide plate 23 light emitting module

24 key bottom board 25 reflector plate

30 key 31 key bottom plate

32 film circuit board 33 light-emitting component

34 buffer structure 101 general key

102 numeral keys 103 function keys

201 keycap 202 scissor type connecting assembly

203 elastomer 211 upper film

212 middle layer film 213 lower layer film

214 key switch 215 opening

221 light guide plate opening 222 light guide plate side

223 light guide mesh point 231 power supply circuit board

232 light emitting component 251 reflector plate opening

261 power supply circuit board 262 direct type light emitting diode

301 keycap 302 connecting assembly

303 elastic body 312 plate body

313 first base plate hook 314 second base plate hook

320 film switch 321 upper film

322 lower film 323 middle film

324 symbol for accommodating space 1041

1042 symbol 1043 symbol

1044 and 2011 light-emitting area

2031 against 2111 top contact

2121 contact opening 2131 lower contact

3011 fixed hook 3012 movable hook

3013 abutting against the top 3021 first frame

3022 second frame 3211 first circuit pattern

3221 second circuit pattern 3231 contact opening

30211 first end of first frame 30212 second end of first frame

30221 first end of second frame 30222 second end of second frame

32111 upper contact 32112 first line

32211 lower contact point 32212 second line

B light beam

Detailed Description

Referring to fig. 4 to 8, fig. 4 is a schematic partial external structure of a keyboard apparatus according to a first preferred embodiment of the invention, fig. 5 is a schematic exploded perspective view of a partial structure of the keyboard apparatus shown in fig. 4 at a first viewing angle, fig. 6 is a schematic exploded perspective view of a partial structure of the keyboard apparatus shown in fig. 4 at another viewing angle, fig. 7 is a schematic cross-sectional view of the partial structure of the keyboard apparatus shown in fig. 4 based on a section line XX, and fig. 8 is a schematic cross-sectional view of the partial structure of the keyboard apparatus shown in fig. 4 based on a section line YY. In which shapes and thicknesses may be exaggerated for simplicity and convenience, and some elements are not shown, such as the middle and lower films in fig. 5 and 6, but it is understood that elements not specifically shown in the drawings or described in the specification are in a form known to those of ordinary skill in the art. Various changes and modifications may be suggested to one skilled in the art based on the teachings herein.

The keyboard device 3 includes a plurality of keys 30, a key bottom plate 31, a film circuit board 32, and a plurality of light emitting elements 33 (for convenience of illustration, fig. 4 to 8 only show a single key 30 and a single light emitting element 33), the keys 30 can be classified into a general key, a numeric key, a function key, etc., which are respectively pressed by a user's finger to enable the keyboard device 3 to generate a corresponding key signal to a computer (not shown), so that the computer can execute corresponding functions, for example, the general key is used to input symbols such as english letters, the numeric key is used to input numbers, and the function key is used to provide various shortcut functions, for example, F1 to F12.

Furthermore, each key 30 includes a key cap 301, a connecting member 302 and an elastic body 303, wherein the connecting member 302 is connected between the key cap 301 and the key bottom plate 31 for moving the key cap 301 up and down relative to the key bottom plate 31, and the elastic body 303 passes through the connecting member 302 and is disposed between the key cap 301 and the film circuit board 32. The lower surface of the key cap 301 further has a fixed hook 3011 and a movable hook 3012 disposed oppositely, and the lower portion of the periphery of the key cap 301 further has two abutting portions 3013 disposed oppositely, and the connecting assembly 302 is a scissors-type connecting assembly and includes a first frame 3021 and a second frame 3022 pivoted to the first frame 3021, and the first frame 3021 and the second frame 3022 are respectively an inner frame and an outer frame.

The key base 31 includes a plate 312 disposed below the film circuit board 32, and a first base hook 313 and a second base hook 314 extending upward from the plate 312 and passing through the film circuit board 32. Based on the above structure design, the first end 30211 and the second end 30212 of the first frame 3021 are respectively connected to the fixed hook 3011 of the key cap 301 and the second bottom hook 314 of the key bottom board 31, and the first end 30221 and the second end 30222 of the second frame 3022 are respectively connected to the first bottom hook 313 of the key bottom board 31 and the movable hook 3012 of the key cap 301, and the first frame 3021 and the second frame 3022 can swing relative to each other to be converted from the folded state to the open-closed state or from the open-closed state to the folded state. However, the above is only an embodiment, and the connection relationship among the connecting element 302, the key base 31 and the key cap 301 is not limited thereto.

As shown in fig. 7, the film circuit board 32 includes an upper film 321, a lower film 322, and an intermediate film 323 stacked on each other, the lower surface of the upper film 321 has a first circuit pattern 3211, the first circuit pattern 3211 has a plurality of first circuits 32112 and a plurality of upper contacts 32111, the upper surface of the lower film 322 has a second circuit pattern 3221, and the second circuit pattern 3221 has a plurality of second circuits 32212 and a plurality of lower contacts 32211 corresponding to the plurality of upper contacts 32111, respectively.

Each upper contact 32111 and the corresponding lower contact 32211 have a space therebetween, and form a membrane switch 320 together with the corresponding lower contact 32211, and in order to make each upper contact 32111 and the corresponding lower contact 32211 have a space therebetween, the middle film 323 is disposed between the upper film 321 and the lower film 322, and the middle film 323 has a plurality of contact openings 3231 corresponding to the plurality of upper contacts 32111 and the plurality of lower contacts 32211, respectively. Preferably, but not limited thereto, any one of the upper film 321, the lower film 322 and the middle film 323 may be made of a Polycarbonate (PC) material, a polyethylene terephthalate (PET) material, a polymethyl methacrylate (PMMA) material, a Polyurethane (PU) material or a Polyimide (PI) material.

Moreover, each key 30 corresponds to two membrane switches 320, and the two membrane switches 320 are not shielded by the elastic body 303. When the key cap 301 of any key 30 is pressed and moves downward relative to the key bottom plate 34, the first frame 3021 and the second frame 3022 change from the open-closed state to the folded state, and the key cap 201 moving downward presses the elastic body 303, at this time, at least one of the two abutting portions 3013 of the key cap 301 abuts against the corresponding upper contact 32111, so that the corresponding upper contact 32111 contacts the corresponding lower contact 32211 through the corresponding contact opening 3231, thereby electrically connecting the corresponding membrane switch 320, so that the keyboard apparatus 2 generates the corresponding key signal. When the key cap 301 of the key 30 is no longer pressed, the key cap 301 moves upward relative to the key bottom 21 due to the elastic force of the elastic body 303, and the first frame 3021 and the second frame 3022 change from the folded state to the open-closed state, and the key cap 301 returns to the original position.

Furthermore, the thin film circuit board 32 further includes a receiving space 324 for receiving the light emitting element 33, for a single key 30, when the light emitting element 33 corresponding to the key 30 is disposed in the receiving space 324 and electrically connected to the thin film circuit board 32, the light emitting element 33 is located below the elastic body 303, the top of the light emitting element 33 is lower than or parallel to the upper surface of the upper thin film 321, and the two thin film switches 320 corresponding to the key 30 are respectively located at two sides of the light emitting element 22. Since any light emitting element 33 is a direct-type light emitting element, the light beam can be projected upward after receiving power from the thin film circuit board 32, and the upward projected light beam sequentially passes through the corresponding elastic body 303 and the corresponding key cap 301 and then is output outward, so that the key cap 301 has a light emitting effect.

In the preferred embodiment, in order to make the top of the light emitting device 33 lower than or parallel to the upper surface of the upper film 321, the light emitting device 33 is connected to the first circuit pattern 3211 of the upper film 321 by a back-punch connection, as shown in fig. 8. Since the top of the light-emitting element 33 is lower than or parallel to the upper surface of the upper film 321, when the key cap 301 of the key 30 is pressed, the light-emitting element 33 does not affect the moving stroke of the key cap 301, thereby enabling a user to have a better operation feeling.

Please refer to fig. 9, which is a schematic cross-sectional view of a portion of a structure base of a keyboard apparatus according to a second preferred embodiment of the present invention. The keyboard apparatus 3' of the preferred embodiment is substantially similar to that described in the first preferred embodiment, and will not be described herein again. The keyboard apparatus 3 'further includes a plurality of buffer structures 34 disposed on the film circuit board 32, and each buffer structure 34 is disposed between the corresponding abutting portion 3013 of the key cap 301 and the corresponding film switch 320, so as to provide a buffering effect when the corresponding key cap 301 is pressed to make the abutting portion 3013 move toward the film circuit board 32, thereby preventing the film circuit board 32 from being damaged due to frequent impact, and further prolonging the service life of the keyboard apparatus 3'.

According to the above description, the keyboard device of the present invention has the following advantages: first, for a single key, the corresponding light emitting component and the elastic body are both centered, so that the light beam projected upwards by the light emitting component can uniformly irradiate the keycap after passing through the elastic body, and the keycap has a uniform light emitting effect; secondly, in response to the central design of the light emitting component and the elastic body, the present disclosure further designs two membrane switches corresponding to each key, and the two membrane switches are respectively located at two sides of the light emitting component, when the keycap is pressed and moves obliquely downward, at least one membrane switch can be triggered to enable the keyboard device to generate a corresponding key signal, but the number of the membrane switches corresponding to each key is not limited to two, and those skilled in the art can perform any equivalent modification design according to the actual application requirements; thirdly, the light emitting component is directly electrically connected to the thin film circuit board and can receive power through the thin film circuit board, and the keyboard device does not need to be additionally provided with other circuit boards (such as the power supply circuit board 231 shown in fig. 2 or the power supply circuit board 261 shown in fig. 3) and a light guide plate (such as the light guide plate 22 shown in fig. 2), so that the manufacturing cost and the volume are reduced; fourth, each key can correspond to a light-emitting component, so that the light-emitting state of each key can be controlled individually.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the claims, so that other equivalent changes and modifications without departing from the spirit of the present invention are intended to be included in the claims.

Claims

1. A keyboard apparatus, comprising:

a film circuit board, including at least one film switch;

the key bottom plate is arranged below the thin film circuit board;

a key, comprising:

a key cap including at least one abutting portion;

the connecting component is connected between the key base plate and the keycap and is used for enabling the keycap to move up and down relative to the key base plate; and

the elastic body is arranged between the keycap and the film circuit board;

when the keycap is pressed, the elastic body is compressed, the at least one abutting part abuts against the at least one film switch, and when the keycap is not pressed any more, the elastic body provides an elastic force to the keycap to enable the keycap to recover to the original position; and

and the light-emitting component is arranged below the elastic body and is electrically connected with the film circuit board so as to provide a plurality of light beams, and the light beams sequentially pass through the elastic body and the keycap and then are output outwards.

2. The keyboard apparatus of claim 1, wherein the at least one membrane switch comprises two membrane switches, and the two membrane switches are not shielded by the elastic body and are respectively located at two sides of the light emitting element.

3. The keyboard apparatus of claim 2, wherein the at least one abutting portion comprises two abutting portions, and the two abutting portions are disposed opposite to each other and respectively located under the periphery of the key cap.

4. The keyboard device of claim 1, wherein the thin film circuit board further comprises an upper film and a lower film, and the upper film is provided with a first circuit pattern and the lower film is provided with a second circuit pattern; the first circuit pattern and the second circuit pattern are respectively provided with at least one upper contact and at least one lower contact, and a space is formed between each upper contact and each lower contact to form the membrane switch.

5. The keyboard apparatus of claim 4, wherein the light emitting element is electrically connected to the first circuit pattern of the upper film.

6. The keyboard apparatus of claim 4, wherein the thin film circuit board further comprises a receiving space for receiving the light emitting device.

7. The keyboard apparatus of claim 6, wherein a top of the light emitting element is lower than an upper surface of the upper film or parallel to the upper surface of the upper film when the light emitting element is disposed in the accommodating space and electrically connected to the film circuit board.

8. The keyboard apparatus of claim 4, wherein the film circuit board further comprises a middle film disposed between the upper film and the lower film such that the space is provided between each of the upper contacts and each of the lower contacts, and the middle film has a contact opening corresponding to each of the upper contacts and each of the lower contacts.

9. The keyboard apparatus of claim 1, further comprising at least one buffer structure disposed on the thin film circuit board and located between the at least one abutting portion and the at least one thin film switch.

10. The keyboard apparatus of claim 1, wherein the connecting member comprises:

a first frame, a first end of the first frame is connected with the keycap, and a second end of the first frame is connected with the key bottom plate; and

the second frame is combined with the first frame and swings relative to the first frame, a first end of the second frame is connected with the key bottom plate, and a second end of the second frame is connected with the keycap.

11. The keyboard apparatus of claim 10, wherein the key cap further comprises a fixed hook and a movable hook disposed opposite to each other, the fixed hook is configured to be connected to the first end of the first frame, and the movable hook is configured to be connected to the second end of the second frame, such that the second end of the second frame can slide in the movable hook.

12. The keyboard device of claim 10, wherein the key substrate comprises a plate, a first substrate hook and a second substrate hook, the plate is located under the thin film circuit board, and the first substrate hook and the second substrate hook respectively extend upward from the plate and penetrate through the thin film circuit board; the first bottom plate hook is used for being connected with the first end of the second frame, and the second bottom plate hook is used for being connected with the second end of the first frame.

13. A keyboard apparatus, comprising:

a film circuit board, including two film switches;

the key bottom plate is arranged below the thin film circuit board; and

a key, comprising:

a key cap, which comprises two abutting parts corresponding to the two membrane switches in phase separation;

the elastic body is arranged between the keycap and the film circuit board;

when the key cap is pressed, the elastic body is compressed, at least one of the two butting parts butts against the corresponding membrane switch, and when the key cap is not pressed any more, the elastic body provides an elastic force to the key cap to restore the key cap to the original position; and

the light-emitting component is electrically connected with the thin film circuit board and provides a plurality of light beams;

wherein, the two membrane switches are not shielded by the elastic body and are respectively positioned at two sides of the light-emitting component.

14. The keyboard apparatus of claim 13, wherein the light emitting element is disposed under the elastic body, and the light beams sequentially pass through the elastic body and the key cap and then are output outwards.

15. The keyboard device of claim 13, wherein the thin film circuit board further comprises an upper film and a lower film, and the upper film is provided with a first circuit pattern and the lower film is provided with a second circuit pattern; the first circuit pattern and the second circuit pattern are respectively provided with at least one upper contact and at least one lower contact, and a space is formed between each upper contact and each lower contact to form the membrane switch.

16. The keyboard apparatus of claim 15, wherein the light emitting element is electrically connected to the first circuit pattern of the upper film.

17. The keyboard apparatus of claim 15, wherein the film circuit board further comprises a receiving space for receiving the light emitting device.

18. The keyboard apparatus of claim 17, wherein a top of the light emitting element is lower than an upper surface of the upper film or parallel to the upper surface of the upper film when the light emitting element is disposed in the accommodating space and electrically connected to the film circuit board.

19. The keyboard apparatus of claim 15, wherein the film circuit board further comprises a middle film disposed between the upper film and the lower film such that each of the upper contacts and each of the lower contacts have the space therebetween, and the middle film has a contact opening corresponding to each of the upper contacts and each of the lower contacts.

20. The keyboard apparatus of claim 13, further comprising two buffer structures disposed on the membrane circuit board, wherein each buffer structure is disposed between the corresponding abutting portion and the corresponding membrane switch.